Revision of the Agrilus humilis species-group (Coleoptera: Buprestidae: Agrilini) with description of thirteen new species from Southeastern Asia
Author
Jendek, Eduard
text
Zootaxa
2017
2017-12-11
4363
2
249
271
journal article
31201
10.11646/zootaxa.4363.2.5
a3725c6c-7f06-4453-a08f-3016ddce3f3e
1175-5326
1098740
2466B9D6-714A-4A0C-9D83-A7662C58A9D8
Agrilus suturistriatus
sp. nov.
(
Figs. 2F
,
5N
)
Description of
holotype
.
Size:
3.4 mm
.
Body.
Shape: cuneiform; Posterior tapering part: long with narrow apex; Color (dorsally): unicolored.
Head.
Size: very large; Modification: strongly convex; Medial impression: absent; Epistoma: raised above frons. Frons: Shape: markedly convex. Vertex: Sculpture elements: rugae; Sculpture aspect: arcuate, subparallel; Sculpture density: dense; Sculpture intensity: rough. Eyes: Size: subequal to half width of vertex (dorsal view); Lower margin: in line or below antennal socket; Median orbit: subparallel. Antennae: Length: reach to about anterior pronotal angles; Serration: from antennomere 4.
Pronotum.
Shape: visually transverse; Sides: slightly arcuate; Maximal width: at posterior margin; Anterior margin: narrower than posterior.
Anterior lobe: Development: obvious; Shape: arcuate; Width: broad; Position: projecting beyond anterior angles. Posterior angles: Shape: rectangular. Disk: Convexity: strongly convex; Impressions: medial and lateral; Medial impression: posteromedial only; Lateral impressions (depth): shallow; Lateral impression (width): narrow. Prehumerus: Development: carinal; Shape: straight; Extent: adjoining posterior angle. Lateral carinae: Convergence: moderate; Junction: present; Narrowest point: at posterior 1/5–1/4 of marginal carina. Scutellum: Size: robust.
Elytra.
Color: unicolored; Humeral carina: absent. Apices: Arrangement: separate; Shape: arcuate. Pubescence: Character: homogenous; Extent: perisutural stripes, sutural wedge.
Sternum.
Prosternal lobe: Distal margin: arcuately emarginate; Emargination (depth): shallow; Emargination (width): wide. Prosternal process: Shape: subparallel; Sides: straight; Angles: obtuse; Disc: impressed; Projection (length): protruding distinctly beyond angles. Metasternum: Metasternal projection: flat.
Abdomen.
Pygidium: Apical margin: arcuate. Sternal groove: Extent: on three apical ventrites; Shape on apex of last ventrite: arcuately sinuate; Sinuosity (delimitation): angulate; Sinuosity (depth): markedly deep; Sinuosity (width): markedly wide.
Legs.
Metatarsus: Length to metatibia: distinctly shorter. Tarsomere 1: Length to following tarsomeres: shorter or subequal to 2–3.
Genitalia.
Aedeagus (
Fig. 5N
): Symmetry: symmetric; Shape: widest in apical part.
Variability.
Unknown.
Sexual dimorphism.
The male without apparent sexual adaptations. The female is unknown.
Diagnosis.
See key and diagnosis at
Agrilus sphenopterus
sp. nov.
Type
material.
Type
locality:
Indonesia
,
Riau
, Eastern
Sumatra
,
Bukit Tigapuluh National Park
[
00°50'00”S
,
102°26'00”E
].
Type
specimens.
Holotype
♂
(
FWPC
): “E
Sumatra
,
Riau prov.
,
Bukit Tigapuluh N.P.
,
0°50'S
,
102°26'E
, J.
Bezděk
leg.,
18–25.i.2000
”.
Distribution.
Indonesia
: (
Riau
).
Etymology.
The specific name is a combination of the Latin nouns
sutura
(seam) and
stria
(stripe). It refers to the elytral pubescence of this species.